Beat egg whites with hand mixer until stiff peaks form.
Add sugar, vanilla sugar, salt, water, and almond extract to saucepan. Stir over medium heat until sugar has completely dissolved. Add orange zest and stir in.
Remove sugar mix from heat and add to large bowl with ground almonds. Once combined, add egg white and fold to combine. Add confectioner’s sugar bit by bit, until a dough forms. Wrap dough in plastic wrap and place in fridge for approx. 2 hrs.
Pre-heat oven to 150°C/300°F. Remove dough from fridge and form into crescent shapes. Place on a baking sheet lined with parchment paper and bake in oven for approx. 15 - 20 min. before removing and setting aside to cool on a wire rack.
When crescents are cool, roll in confectioner’s sugar to coat. Enjoy!